deps: bump ueberdb2 to ^6.0.3 (dirty-ts default-import fix)

v6.0.3 ships ether/ueberDB#958 — unwrap the CJS `__esModule`/default
wrapping on `import Dirty from 'dirty-ts'`. Without it, every consumer
using `dbType: "dirty"` (the settings.json.template default) crashes
at init with `TypeError: Dirty is not a constructor`.

Bumped in src/package.json and bin/package.json; lockfile refreshed.
Backend test suite (1115 tests) passes locally against v6.0.3 with
`dbType: "dirty"`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 2 people

bin/package.json

@@ -11,7 +11,7 @@
     "log4js": "^6.9.1",
     "semver": "^7.8.0",
     "tsx": "^4.22.0",
-    "ueberdb2": "^6.0.2"
+    "ueberdb2": "^6.0.3"
   },
   "devDependencies": {
     "@types/node": "^25.8.0",